WordNet
light adaptation
n. the process of adjusting the eyes to relatively high levels of illumination; the pupil constricts and the cones system is operative
Usage examples of "light adaptation".
The bleaching of rhodopsin and the narrowiviy of the pupil on re-emergence into full light is light adaptation.
At the retina, there is low-level vision, including light adaptation and the center-surround receptive fields of ganglion cells.